EXTRA DISCOUNTS: Purchase this item by itself or with any other items from Precision Marshall's category to receive an extra discount based on the total value of category products in your Shopping Cart. Click the link for more information.This Firechrome Oversize Tolerance Ground Flat Stock is made by Precision Marshall Steel Company. The steel type is AISI H-13 hot-work tool steel, annealed to 21 Rc (230 Brinell). It has an exceptionally fine structure resulting in improved machinability, polishability and high temperature tensile strength. Applications include hot-work tools, die casting molds, extrusion tools, forging dies, hot shear blades, stamping dies, and plastic injection mold details.The standard nominal sizes are ground to a satin finish on four sides, free of decarburization, held to tight tolerances in dimensions and squareness, and ready for layout. Each piece is lightly coated with rust-preventive oil and individually packaged in a vapor-resistant envelope which has the size and steel type clearly marked. At least one end is painted brown for easier identification of the steel type.The oversize Thickness |T| tolerance is +.010/+.015". The oversize Width |W| tolerance is +.010/+.015". The Length |L| tolerance is +.188/.375".The available thicknesses are 1/4 to 1 inches. The available widths are 1 to 4 inches. Please contact us if you need a different size, or if you need us to make any alterations.DELIVERY TIME: Normally in stock and ships the next business day.SHIPS FROM: Precision Marshall products are sent directly to you from the warehouses in Bolingbrook, IL; Hartford, CT; Euless, TX; or Santa Fe Springs, CA.MINIMUM ORDER: None.HEAT TREATMENT: Vacuum furnaces or protective atmosphere furnaces are recommended to prevent decarburization. Preheat thoroughly to 1450/1500°F and heat to 1800/1875°F, hold 30 minutes at temperature. Pressure quench in vacuum or air cool to 150°F, then temper immediately. If complicated designs or large sections are to be heat treated, an interrupted oil quench to 1000°F may be used.TEMPERING DATA: Double temper one hour per inch of section thickness, two hours minimum per temper. Representative hardness levels after tempering are tabulated below. Air quenched from 1800°F. Tempered 4 to 6 Hours.
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